Properties of the Number 78124

Seventy-Eight Thousand One Hundred Twenty-Four

Basics

Value: 78123 → 78124 → 78125

Parity: even

Prime: No

Previous Prime: 78121

Next Prime: 78137

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 19531

Divisors: 1, 2, 4, 19531, 39062, 78124

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011000100101100

Octal: 230454

Duodecimal: 39264

Hexadecimal: 1312c

Square: 6103359376

Square Root: 279.50670832736733

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = 5ⁿ - 1. A24049

Numbers of the form i·5^j-1 (i=1..4, j >= 0). A181287

Sheffer triangle S2[4,1] = (exp(x), exp(4·x) - 1). A285061

Jordan function J₇(n). A69092

a(n) = 1 - n⁷. A24005

a(n) = 4·a(n-1) + 5·a(n-2) for n > 1, with a(0) = 2 and a(1) = 4. A87404

Numbers that are repdigits in base 5. A48330

a(n) = 0ⁿ + 5ⁿ - 1. A103455

Difference of two positive 7th powers. A181126

Monotonic ordering of nonnegative differences 5ⁱ-3^j, for 40>=i>=0, j>=0. A192150